Numerical Investigation of Hydrodynamics and Cohesive Sediment Transport in Cua Lo and Cua Hoi Estuaries, Vietnam
Two-dimensional models of large spatial domain including Cua Lo and Cua Hoi estuaries in Nghe An province, Vietnam, were established, calibrated, and verified with the observed data of tidal level, wave height, wave period, wave direction, and suspended sediment concentration. The model was then app...
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oai:doaj.org-article:fbef364b1887405d874a6088dc6d364f2021-11-25T18:04:51ZNumerical Investigation of Hydrodynamics and Cohesive Sediment Transport in Cua Lo and Cua Hoi Estuaries, Vietnam10.3390/jmse91112582077-1312https://doaj.org/article/fbef364b1887405d874a6088dc6d364f2021-11-01T00:00:00Zhttps://www.mdpi.com/2077-1312/9/11/1258https://doaj.org/toc/2077-1312Two-dimensional models of large spatial domain including Cua Lo and Cua Hoi estuaries in Nghe An province, Vietnam, were established, calibrated, and verified with the observed data of tidal level, wave height, wave period, wave direction, and suspended sediment concentration. The model was then applied to investigate the hydrodynamics, cohesive sediment transport, and the morphodynamics feedbacks between two estuaries. Results reveal opposite patterns of nearshore currents affected by monsoons, which flow from the north to the south during the northeast (NE) monsoon and from the south to the north during the southeast (SE) monsoon. The spectral wave model results indicate that wave climate is the main control of the sediment transport in the study area. In the NE monsoon, sediment from Cua Lo port transported to the south generates the sand bar in the northern bank of the Cua Hoi estuary, while sediment from Cua Hoi cannot be carried to the Cua Lo estuary due to the presence of Hon Ngu Island and Lan Chau headland. As a result, the longshore sediment transport from the Cua Hoi estuary to the Cua Lo estuary is reduced and interrupted. The growth and degradation of the sand bars at the Cua Hoi estuary have a great influence on the stability of the navigation channel to Ben Thuy port as well as flood drainage of Lam River.Viet Thanh NguyenMinh Tuan VuChi ZhangMDPI AGarticlehydrodynamicssuspended sediment concentrationcohesive sediment transportmonsoonCua Lo estuaryCua Hoi estuaryNaval architecture. Shipbuilding. Marine engineeringVM1-989OceanographyGC1-1581ENJournal of Marine Science and Engineering, Vol 9, Iss 1258, p 1258 (2021) |
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hydrodynamics suspended sediment concentration cohesive sediment transport monsoon Cua Lo estuary Cua Hoi estuary Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
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hydrodynamics suspended sediment concentration cohesive sediment transport monsoon Cua Lo estuary Cua Hoi estuary Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Viet Thanh Nguyen Minh Tuan Vu Chi Zhang Numerical Investigation of Hydrodynamics and Cohesive Sediment Transport in Cua Lo and Cua Hoi Estuaries, Vietnam |
description |
Two-dimensional models of large spatial domain including Cua Lo and Cua Hoi estuaries in Nghe An province, Vietnam, were established, calibrated, and verified with the observed data of tidal level, wave height, wave period, wave direction, and suspended sediment concentration. The model was then applied to investigate the hydrodynamics, cohesive sediment transport, and the morphodynamics feedbacks between two estuaries. Results reveal opposite patterns of nearshore currents affected by monsoons, which flow from the north to the south during the northeast (NE) monsoon and from the south to the north during the southeast (SE) monsoon. The spectral wave model results indicate that wave climate is the main control of the sediment transport in the study area. In the NE monsoon, sediment from Cua Lo port transported to the south generates the sand bar in the northern bank of the Cua Hoi estuary, while sediment from Cua Hoi cannot be carried to the Cua Lo estuary due to the presence of Hon Ngu Island and Lan Chau headland. As a result, the longshore sediment transport from the Cua Hoi estuary to the Cua Lo estuary is reduced and interrupted. The growth and degradation of the sand bars at the Cua Hoi estuary have a great influence on the stability of the navigation channel to Ben Thuy port as well as flood drainage of Lam River. |
format |
article |
author |
Viet Thanh Nguyen Minh Tuan Vu Chi Zhang |
author_facet |
Viet Thanh Nguyen Minh Tuan Vu Chi Zhang |
author_sort |
Viet Thanh Nguyen |
title |
Numerical Investigation of Hydrodynamics and Cohesive Sediment Transport in Cua Lo and Cua Hoi Estuaries, Vietnam |
title_short |
Numerical Investigation of Hydrodynamics and Cohesive Sediment Transport in Cua Lo and Cua Hoi Estuaries, Vietnam |
title_full |
Numerical Investigation of Hydrodynamics and Cohesive Sediment Transport in Cua Lo and Cua Hoi Estuaries, Vietnam |
title_fullStr |
Numerical Investigation of Hydrodynamics and Cohesive Sediment Transport in Cua Lo and Cua Hoi Estuaries, Vietnam |
title_full_unstemmed |
Numerical Investigation of Hydrodynamics and Cohesive Sediment Transport in Cua Lo and Cua Hoi Estuaries, Vietnam |
title_sort |
numerical investigation of hydrodynamics and cohesive sediment transport in cua lo and cua hoi estuaries, vietnam |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doaj.org/article/fbef364b1887405d874a6088dc6d364f |
work_keys_str_mv |
AT vietthanhnguyen numericalinvestigationofhydrodynamicsandcohesivesedimenttransportincualoandcuahoiestuariesvietnam AT minhtuanvu numericalinvestigationofhydrodynamicsandcohesivesedimenttransportincualoandcuahoiestuariesvietnam AT chizhang numericalinvestigationofhydrodynamicsandcohesivesedimenttransportincualoandcuahoiestuariesvietnam |
_version_ |
1718411719818084352 |